Water insecurity is a touchstone for 2018. Our planet isn't running out of water, but various kinds of mismanagement have led to local water crises across the planet, directly threatening millions of people.

As I was reading the current series of YES! articles on the mental health crisis, I received an email from Darcia Narvaez, professor of psychology at University of Notre Dame. She was sending me articles being prepared for an anthology she is co-editing with the working title Sustainable Vision.The articles present lessons from indigenous culture that underscore why community is the solution to so much of what currently ails humanity.

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Cowry Collective members participate in a time bank market, where products and produce can be exchanged for tokens, not cash, at the New Roots Urban Farm in St. Louis, Missouri. Tosha Phoenix

By Araz Hachadourian

When Chinyere Oteh welcomed her first child in 2009, she found herself in a predicament familiar to many new stay-at-home mothers: Stress was high, but money and time were short.

"I thought to myself, I can't be the only person trying to figure out how to have a healthy family life as well as make ends meet," Oteh said. That's when she remembered an article she had read on time-banking.